Figure 1: Figure 1 depicts the stimulus sequence of the mfERG (top), an example of the resulting retinal response elicited (middle) and the resulting mfOPs (bottom). Top: Each stimulus started with a focal flash that could be either light or dark (Lmax: 200cd/m2, Lmin: 1cd/m2), followed by two global flashes (F, Lmax: 200cd/m2) at an interval of ∼26ms. A dark frame (B, Lmax: = 1cd/m2) separated each step in the stimulus sequence. The mfERG first order response component is calculated by adding the focal mean response to a stimulus base interval starting with a light m-sequence stimulus and subtracting those starting with a dark m-sequence stimulus. Middle: The resulting mfERG response, filtered at 10-300 Hz, consists of three epochs: the response to the focal flash at 10-40 ms (direct component, DC) and the following two components induced by the global flashes at 40-70 ms (IC1) and at 70-100 ms (IC2). Bottom: Filtering the mfERG response at 100-300Hz results in mfOPs for each of these epochs: DC, IC1 and IC2.